The
Oldcorollas FAQ
An FAQ dealing with KE1x to KE7x Toyota Corollas
Supplement to http://groups.yahoo.com/groups/oldcorollas
All K Motors are watercooled inline 30-degree slant 4-cylinders, have
overhead
valves with pushrods, and are driven by a single or double row timing
chain. Ranging from 1.0 to 1.8L made from 1966 to present, they appear
in
Corolla RWD (KE series), Publica and Starlet RWD (KP series), and
various Toyota Vans. Currently still in production in the TownAce SBV (7K) and Toyota Industrial Forklifts (4K).
Models up to 4K have points-style distributors, some 4K, and all later
motors have an electronic distributor, of which there is
an external ignitor dizzy on 4Ks and internal ignitor model on 5/7K.
There is one common manifold stud design across all Ks, however sumps
vary depending on vehicle application. 4K onwards have a 10mm higher
deck height than 3K and earlier. All Ks have an aluminium
alloy head, the 1K, 3K and 4K combustion center is in the head, while
5K
and 7K perform combustion in the cylnder bore (called a heron-type
combustion chamber). Dished piston 4Ks did exist, in the
4K-U and 4K-E variants. The diaphragm-type
fuel pump is mounted on the side of the block and actuated by a lobe on
the camshaft. The injected 4K-E has a different rocker cover than the
others due to intake plenum design. Oil filter is Toyota Genuine Parts
15601-33021 (Ryco Z68).
All K blocks have the same bellhousing studs and engine mount points, so you can drop a 7K in place of your 1K without a problem. Automatic cars have a different engine backing plate than the manuals, but all gearboxes bolt up to all engine blocks.
The Gregories says this more eloquently than I can:
The five bearing crankshaft and flywheel are dynamically balanced
and crankshaft end play is controlled at the centre main journal by
thrust washers which are separate from the main bearings. The main big
end bearings are replaceable steel backed shells. The cam ground alloy
pistons are equipped with two compression rings
and one oil control ring. The fully floating gudgeon pin is offset
towards the camshaft side of the engine and is secured by circlips at
both ends. Connecting rods are H section forged steel. The camshaft is
chain driven and supported in four precision type bearings. The
aluminium alloy cylinder head is designed with wedge shaped
combustion chambers to allow efficient heat distribution. These wedge
type chambers, together with independant inlet and outlet ports,
provide smooth performance during all operating conditions. The
lubrication system is a forced feed, full flow filtering type. The
trochoid gear type oil pump is driven through the distributor shaft
from the camshaft. The oil filter is a spin-on throw away type.
Specifications
| Engine |
Year |
Displacement |
BHP |
Torque (lb-ft) |
Bore (mm)
|
Stroke (mm)
|
CR |
Notes |
| K |
66-69 |
1077 |
60@6000 |
62.7@3800 |
75 |
61 |
9:1 |
|
| K-B |
68-69 |
1077 |
73@6600 |
66.3@4400 |
75 |
61 |
10:1 |
sprinter twincarb |
| 2K |
69-88 |
993 |
45@5600 |
49@4000 |
72 |
61 |
9:1 |
|
| 3K |
69-77 |
1166 |
73@6000 |
74.2@3800 |
75 |
66 |
9:1 |
|
| 3K-B |
69-75 |
1166 |
83@6600 |
75@4600 |
75 |
66 |
10:1 |
sprinter twincarb |
| 3K-D |
69-77 |
1166 |
79@6600 |
75@4200 |
75 |
66 |
10:1 |
dual carb |
| 3K-H |
74-79 |
1166 |
60@6000 |
|
75 |
66 |
9:1 |
|
| 3K-C |
77-79 |
1166 |
60@6000 |
|
75 |
66 |
8.5:1 |
Californian emissions |
| 4K |
78-89+ |
1290 |
|
|
75 |
73 |
|
|
| 4K |
80-81 |
1290 |
60@6000 |
|
75 |
73 |
9:1 |
|
| 4K-U |
82 |
1290 |
74@5600 |
78@3600 |
75 |
73 |
9:1 |
Japanese emissions |
| 4K |
82-84 |
1290 |
65@5600 |
72@3600 |
75 |
73 |
9.4:1 |
|
| 4K-C |
81-82 |
1290 |
58@5200 |
67@3600 |
75 |
73 |
9:1 |
Californian emissions |
| 4K-E |
82-84 |
1290 |
58@4200 |
74@3400 |
75 |
73 |
9.5:1 |
Fuel Injection |
| 5K |
83-89 |
1496 |
|
|
80.5 |
73 |
|
|
| 7K |
98 |
1781 |
76@4600 |
103@2800 |
80.5 |
87.5 |
9:1 |
|